<template>
    <div
        v-if="isExternal"
        :style="styleExternalIcon"
        class="svg-external-icon svg-icon"
        v-on="$listeners"
    />
    <svg
        v-else
        :class="svgClass"
        :style="styleInfo"
        aria-hidden="true"
        v-on="$listeners"
    >
        <use :href="iconName" />
    </svg>
</template>

<script>
import { isExternal } from "@/utils/validate";

export default {
    name: "SvgIcon",
    props: {
        size: {
            type: Number,
            default: null
        },
        iconClass: {
            type: String,
            required: true
        },
        className: {
            type: String,
            default: ""
        }
    },
    computed: {
        isExternal() {
            return isExternal(this.iconClass);
        },
        iconName() {
            return `#icon-${this.iconClass}`;
        },
        svgClass() {
            if (this.className) {
                return "svg-icon " + this.className;
            } else {
                return "svg-icon";
            }
        },
        styleInfo() {
            const style = {};
            if (this.size) {
                style.fontSize = `${this.size}px`;
            }
            return style;
        },
        styleExternalIcon() {
            const style = {
                mask: `url(${this.iconClass}) no-repeat 50% 50%`,
                "-webkit-mask": `url(${this.iconClass}) no-repeat 50% 50%`
            };
            if (this.size) {
                style.fontSize = `${this.size}px`;
            }
            return style;
        }
    }
};
</script>

<style lang="scss" scoped>
*:focus {
    outline: none;
}
.svg-icon {
    width: 1em;
    height: 1em;
    vertical-align: -0.15em;
    fill: currentColor;
    overflow: hidden;
    &.min {
        width: 8px;
        height: 8px;
        vertical-align: baseline;
    }
}

.svg-external-icon {
    background-color: currentColor;
    mask-size: cover !important;
    display: inline-block;
}
</style>